It's a technologically simple way to change the caller IDinformation encoded into an Internet call, allowing a caller to pretend to be someone they're not.
It also has a clever little display screen on the top of the unit for displaying caller IDinformation, the time of day, battery status and message alerts.
And if you're into Bluetooth, the Address Book application can use the wireless technology to display the caller-ID information from a Bluetooth-ready wireless phone, provided you also have a Bluetooth device attached to your computer.